Preventing unauthorized display modifications is crucial for maintaining website integrity and user experience. The most common protection methods include implementing robust CSS protection strategies to prevent unauthorized style changes. Many developers utilize Content Security Policy (CSP) headers to restrict resource loading and execution. User authentication systems ensure only authorized personnel can access modification capabilities. Technical approaches like viewport control and iframe busting techniques prevent unwanted framing of content. Regular security audits and monitoring systems help detect and prevent real-time manipulation attempts. Server-side validation provides an additional layer of protection against injected code. These methods work together to create comprehensive protection against unauthorized display changes while maintaining website functionality and performance standards.